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Port numbers range from 0 to 65535, but only port numbers 0 to 1023 are reserved for privileged services and designated as well-known ports. The following list of well-known port numbers specifies the port used by the server process as its contact port.
Well-known port numbers are assigned within the range 0 through 1023 and are specified in Request for Comments (RFC) 1060. (The total range of possible port numbers is 0 through 65535.) The following table describes some of the well-known port numbers.
The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. [3] They are used by system processes that provide widely used types of network services.
The port numbers are divided into three ranges: the well-known ports, the registered ports, and the dynamic or private ports. The well-known ports (also known as system ports ) are those numbered from 0 through 1023.
The well-known ports cover the range of possible port numbers from 0 through 1023. The registered ports are numbered from 1024 through 49151. The remaining ports, referred to as dynamic ports or private ports, are numbered from 49152 through 65535.
There are three various types of port number spaces: well-known ports (0–1023), registered ports (1024–49151), and dynamic ports (49152-65535). Well-known or Reserved Ports: 0–1023. Registered Ports: 1024–49,591. Dynamic Ports: 49,592–65,535.
The Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) each use port numbers for their communication channels. The ports numbered 0 through 1023 are the well-known system ports, reserved for special uses.
Well-known ports, also known as system ports, are port numbers between 0 and 1023 that are reserved for commonly used network services and applications.
Ports 0 to 1023 are Well-Known Ports. Ports 1024 to 49151 are Registered Ports (often registered by a software developer to designate a particular port for their application) Ports 49152 to 65535 are Public Ports.
Each TCP port is assigned a unique number ranging from 0 to 65535. These ports are categorized into three ranges: well-known ports (0-1023), registered ports (1024-49151), and dynamic or private ports (49152-65535). TCP Port Number List: Below is a list of commonly used TCP port numbers along with their respective services: